DICLOFENAC POTASSIUM vs VOLTAREN-XR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. DICLOFENAC POTASSIUM and VOLTAREN-XR are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	DICLOFENAC POTASSIUM	VOLTAREN-XR
Rating	New	70/100
Pharmacy pays	$0.36 /mL	$0.36 /mL
Type	RX	RX
Active ingredient	DICLOFENAC POTASSIUM	DICLOFENAC SODIUM
Manufacturer	Rk Pharma	Novartis
Dosage forms	Capsule, Powder, Tablet	Tablet, extended release
Drug class	Nonsteroidal Anti-Inflammatory Drug	Nonsteroidal Anti-Inflammatory Drug
Boxed warning	Boxed warning	None
Half-life	about 2 hours (terminal/elimination half-life; the label's table gives a mean of 2.3 hours in healthy adults, with wide variation between people — 48% coefficient of variation)	about 2 hours (terminal/elimination half-life; the label's table gives a mean of 2.3 hours in healthy adults, with wide variation between people — 48% coefficient of variation)
Treats	Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea	Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea

diclofenac potassium voltaren-xr

Rating

New

70/100

Pharmacy pays

$0.36 /mL

Type

Active ingredient

DICLOFENAC POTASSIUM

DICLOFENAC SODIUM

Manufacturer

Rk Pharma

Novartis

Dosage forms

Capsule, Powder, Tablet

Tablet, extended release

Drug class

Nonsteroidal Anti-Inflammatory Drug

Boxed warning

None

Half-life

about 2 hours (terminal/elimination half-life; the label's table gives a mean of 2.3 hours in healthy adults, with wide variation between people — 48% coefficient of variation)

Treats

Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea

Frequently asked questions

Which is cheaper, Diclofenac Potassium or Voltaren-XR?

Pharmacies pay about the same to acquire either one — roughly $0.36 per ml, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Diclofenac Potassium and Voltaren-XR?

Diclofenac Potassium contains Diclofenac Potassium, while Voltaren-XR contains Diclofenac Sodium — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.